Feed-water heater.



No. 869,212. PATENTED'OGT. 22. 1907. T. M. MONAHAN.

FEED WATER HEATER.

APPLICATION rnnn FEB. '1. 1901.

rut NoRRIs pzrsns co., WASHINGTON, 0. c.

6 MW? f lllfillTElil STATF PATENT i FFlQE.

THOMAS M. MONAHAN, OF MIDDLEPORI, OHIO, ASSIGNOR OF ONE-FOURTH TO JOHN B.

LINDSEY AND ONE-FOURTH TO CURTIS B. SMITH, OF MIDDLEPORT,

OHIO.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed February '7. 1907- Serial No. 356.138-

To all whom it may concern:

Be itknown that I, THOMAS M. IVIONAHAN, a citizen of the United States, residing at Middleport, Meigs I county, State of Ohio, have invented certain new and useful Improvements in Feed-Water Heaters for Steam- ,Boilers; and I do declare the following to be a clear, full, and exact description of the invention, attention being called to the accompanying drawing, with the reference characters marked thereon, which form also a part of this specification.

This invention relates to a device for pro-heating the water supplied for feeding steam-boilers, particularly such of locomotives.

The invention consists essentially of a certain fitting constructed as shown and hereinafter described and through which steam from the boiler is admitted to the feed-water while the same passes through a conduit whereby it is conveyed to the boiler.

In the following specification and particularly pointed out in the claims at the end thereof will be found a full description of the invention, together with its operation, parts and construction, which latter is also illustrated in the accompanying drawing, in which Figure l, is a side-elevation of a locomotive and shows location of my device for prc-heating the feed-water, and its relation to other existing parts connected with the feed-water supply. Fig. 2, shows my device in longitudinal section and at enlarged scale. Fig. 3, is an end-view of the same, showing itas it appears when a section is taken on line 3 3 of Fig. 2.

My device is principally intended for use on loconmtive-boilers and it is therefore illustrated in such connection. It may however be also used on steamboat and stationary boilers.

In Fig. I, which shows in side-view an elevation of a locomotive, 5, is the usual pipe which conveys the feed-water to the boiler from the water-reservoir carried by the tender back of the locomotive. It connects to device whereby this water is forced into the boiler whenever required, this device being in locomotives the usual injector and is indicated at 6.

From here another pipe conveys the water into the boiler 7, near the forward end of the same, a checkvalve 8 being generally interposed near its dischargeend. I

My device consists of a housing A, adapted to be inserted between the discharge-end of this pipe last mentioned, and the injector so as to form a part of the waterconveying conduit.

As shown there is a pipe 9 leading from injector G to housing A, and another pipe 11 leading from housing A through check-valve 8 into boiler 7 When the device which moves the water, which is injector 6 in this case,

is in operation, the boiler-feed-water passes through a conduit consisting of pipe 5, injector 6, pipe 9, housing A, pipe 11 and check-valve 8 into the boiler 7.

Housing A, is substantially tubular and open at opposite ends, where it connects to the adjacent ends of pipes 9 and 11 in a suitable manner, as for instance by a screw-connection, involving coupling-nuts 12. For the purpose of pro-heating this water, I admit steam into the conduit through which it passes, this steam entering through a port 13 in the side of tubular housingA which port communicates with boiler 7 by means of a short horizontal pipe 14. This steam or the condensed hot-water resulting therefrom, pre-heat the feed-water I while mingling with the same during its course to the boiler. Communication through this pipe 13 from boiler 7 is normally open, but may be closed should this fecd-out-lit not be used a valve 15 being provided for such purpose.

Ito-action of the steam so admitted back t0\ ards the injector is prevented by a check-valve 16, located between port13 and the injector, and preferably contained in housing A. A screw-cap 17 is provided in the upper part of housing A, which is upwardly extended thereat for the purpose to permit access to this checkvalve 16 for purposes or repair or re-newal. This checkvalve may also assume and perform the functions of the usual boiler-cheek 8, should this latter be out of order.

The area and capacity of port 13 and pipe 14 should be smaller than that of pipe 11, the proportional relation being preferably as one to twov The advantages of pro-heating the feed-water are obvious, particularly in case of locomotive-boilers. A saving in fuel results necessarily therefrom and the objectionable effects of water entering the boiler cold, noticeable particularly on the boiler-tubes and their joints, are avoided, thereby prolonging the life of the boiler.

Having described my invention, I claim as new:

In means [or pro-heating the feed\vate1r'for locomotives, the combination of the boiler, a feedwater supply-pipe for the some, an injector to force the water through -the pipe, a tubular housing open at opposite ends where it connects to the supply-pipe mentioned of which it forms an inserted part. said housing being provided with a lateral port open towards the side of the boiler and an upwardly extended part where it is also open, a screw-cap fitted to this open part a cheek-valve near one end of the housing and below this screw-cap, and a short horizontal pipe connecting the housing at it's lateral port with the side of the boiler.

In testimony whereof, I hereunto aifix my signature in the presence of two witnesses.

THOMAS M. MONAHAN.

Witnesses lianvnr N. S'rnvrcx, CURTIS B. SMITH. 

